Introduction

Dear children, prepare yourselves to step into a broad and miraculous world in a little while. In fact, this world interests you closely. Although you might not have realised until now, trillions of workers of this world have been unceasingly working for you. You are surprised, aren't you?

Our bodies are composed of cells, each of which has assumed a different task. The figure below shows a few types of our body cells, which act together to enable us to live.

This marvellous world is your body and the workers which have been working for you are your body cells. Every point of your body consists of cells. At this moment, there are trillions of cells in your body that are at your service. They are working even while you are reading this book. For example, your eye cells are carrying out a number of processes ceaselessly in order to enable you to read. As you breathe, the cells in your windpipe and then the cells in your lungs come into play. In the meantime, the cells in your stomach are probably digesting the food you ate a few hours ago.

SECRETORY CELLS

AND OUR CELLS GO UNDER THE MICROSCOPE......

CELLS iN THE EYE

NERVE CELL

RED BLOOD CELL

What we have mentioned here are only a few of the processes that are continually carried out in your body. All of these happen without your even being aware of them. How is that trillions of cells come together, know what to do and co-operate to function? Moreover, no trouble arises during these processes. No cell attempts to do another's task or refuses to perform its own task. Besides, all these processes take place with an extraordinary speed.

In the coming pages, we will examine how daily tasks, such as digestion, respiration, seeing and hearing are, in reality, quite splendid. We will witness that our cells sometimes act like a chemist to produce chemical substances, sometimes act like an engineer to make calculations and sometimes work to meet the needs of some other cells.

It is astonishing that all these are achieved by cells that are too small to be seen with the naked eye. Moreover, the cells in our bodies perform these vital functions without receiving any help. Remember that these cells are not human beings like us. They can neither see each other nor hear, nor decide to "do wise work". They have no ears or brains. They have not studied chemistry, but, as we will see in the following sections, they know chemical formulas and can produce substances according to these formulas. How is it that they can do all these?

You will be filled with admiration as you read and find out that cells do not perform all these tasks by their own wisdom. You must already be aware that they could not have possibly learnt how to carry out these tasks in time by chance.

Still, we owe our life to the conscious acts of these tiny beings, which we cannot even see with the naked eye. Surely in them there is a very important fact for us to understand. There is a possessor of superior wisdom who makes our cells perform all these tasks and teaches them what to do. The possessor of this eternal wisdom is Allah, Who has created everything, loves us and knows all of our weaknesses and needs.

More processes are carried out in every one of our bodies' cells, which are too small to be seen with the naked eye, than in the laboratory below.

Each one of the trillions of cells in our body fulfills its tasks perfectly as a result of Allah's perfect plan, so that we may lead our lives without any difficulty. Waking up every morning to go to school, tasting the sweet flavour of honey, breathing without any difficulty, running in your school garden and playing with your friends, writing, reading and lots of other things you do are thanks to Allah's compassion and mercy.

In the picture above, you can see the inside of a cell. At the center of the cell is the cell nucleus, which is surrounded by other cell parts.

I. Nucleus
II. Ribosome

Like all other things on earth, Allah has created you perfectly and given you everything you need. What you should do in return is to give thanks to our Lord, Who has given you all these blessings that are much more valuable than any other present you may be given in this world.

For this reason, we need to think thoroughly about what Allah has bestowed upon us. In the verses of the Qur'an, our Holy Book, Allah has given many examples for people to reflect on. The following is one such verse:

In the creation of the heavens and earth, and the alternation of the night and day, and the ships which sail the seas to people's benefit, and the water which Allah sends down from the sky—by which He brings the earth to life when it was dead and scatters about in it creatures of every kind—and the varying direction of the winds, and the clouds subservient between heaven and earth, there are Signs for people who use their intellect. (Surat al-Baqara: 164)

In this book, we will reflect upon our bodies. We will see how perfectly and elaborately the human body has been created by Allah. Once you read the book, you will love Allah even more and thank Him. You will be surprised at the neglectfulness of the people around you, who do not reflect, and you will be eager to tell them what you know, so that they will be heedful too.

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